Mortising-machine.



G. NELSON. MORTISING MACHINE. APPLICATION FILED IBB.26. 1912.

Patented Nov. 19, 1912.

3 SHEETSSHEET 1.

COLUMBIA PLANOGRAPH 60-, WASHINGTON. D. c.

G. NELSON. MORTISING MACHINE. 'APPLIOATION FILED PEB.26, 1912.

1,044,904. I Patented Nov. 19, 1912.

3 SHEETS-*SHEBT 2.

' COLUMBIA PLANOGRAPH ISO-,WASHINOTON. u- C.

G; NELSON.

MORTISING MACHINE.

APPLICATION FILED PEB.26, 1912.

1,044,904, Y Patented Nov. 19, 1912.

3 SHEETS-SHEET 3.

FIG. 4-.

WIT/M5558 mum/70R 4,. W M M a Mm 4 M4 BY ATTX COLUMBIA PLANOGRAPH 60.,WASHINGTON, D. c.

u TED STATES PilENT enrich.

CARL NELSON, F ROCKFORD, ILLINOIS.

MORTISING-MACHINE.

To all whom it may concern:

Be it known that I, CARL NELsoN, a citizen of the United States,residing at Rockford, in the county of l/Vinnebago and the State ofIllinois, have invented certain new and useful Improvements inMort-ising-Machines, of which the following is a specification.

This invention relates to improvements in mortising machines and moreparticularly to an attachment for such wood working machines as are usedin finishing doors.

It comprises means for mortising the stiles of doors for the receptionof the tenons of the cross pieces that are to be secured thereto. Meansfor automatically regulating the length of the mortise are provided andalso means for spacing apart the several mortises to be formed in anyone or in any number of similar stiles that may be fed into the device.

Efiiciency and accuracy of operation are among the objects attained.

With the foregoing and other objects in view the invention consists inthe combina' tion and arrangement of parts to be hereinafter fullydescribed in the following specification, pointed out in the claims andillustrated in the accompanying drawings which form a part of thespecification and in Which- Figure 1 is a plan of my improved mortisingmachine applied to a type of wood working machine. Fig. 2 is a sectiontaken on line 33 of Fig. 3. Fig. 3 is a plan of my machine proper. Fig.4 is a side elevation of my machine showing a portion of the woodworking machine. Fig. 5 is an end elevation of my machine. Fig. 6 is anenlarged detail of the gear that automatically regulates the length ofthe mortise to be formed. Fig. 7 is an end elevation of Fig. 6.

Like reference characters indicate corresponding parts throughout theseveral views.

1 is the bed of a wood working machine; 2, 2" and 3 are power operatedplaners carried by that machine and 4, 5 and 6 are feed rollers. Uponthe bed 1 of the machine the door stiles 7 are supported upon edge asshown ready to be mortised and they are forced by the action of therollers Specification of Letters Patent.

Application filed February 26, 1912.

Patented Nov. 19, 1912.

Serial No. 680,074.

4, 5 and 6 toward my machine. My ma chine comprises a circular poweroperated saw 8 which is supported upon a suitable shaft 9 that isprovided with a pulley 10 to receive power from a suitable belt and thatis journaled in bearings 11 and 12 of an apron 13 that is carried upon apivot 14 journaled in suitable supports or boxes 15 and 16. i

17 and 17 are plates provided with angular slots 18, 18 respectively andwith angular terminally curved slots 19 and 19, respectively, the saidplates being secured, respectively, to the bearings 11 and 12 by bolts20 and 20.

22 is a bar connecting the slotted plates 17 and 17 through the mediumof pins 21 and 21 carried at its opposite ends. Normally the pins 21 and21 engage their respective plates 17 and 17 in the curved extremity ofthe angularly slotted portions of said plates.

23 is an angular link disposed upon a pivot 24 and apertured at one endfor engagement with a lug 25 carried by the bar 22 while the other endof the link engages a short arm 26 that is connected to a rack 27 thatis supported by an arm 28 of a beam 29. The rack 27 is secured to thebeam 29 through the medium of a bolt 31.

32 is a gear block mounted upon the rack 27 and the beam 29. This blockis secured to the rack through the medium of a set screw 33 and isprovided with a strap 34 bolted thereon as at 35, 35 and 36, the latterbolt passing through the said strap and entirely through the gear blockand serving as an axis for a gear 37 retained thereby within the saidblock in engagement with the teeth of the rack 27. 38 is another gearmounted within the block 32 upon a pin 39 and engaging the gear 37 andprovided wit-h a spring-controlled pin 40 which normally projects beyondthe periphery of the said gear 38. The strap 34 previously describedpasses beyond the block 32 to which it is secured and is secured bymeans of links 41, 41 to guides 42 and 43 that are adapted to receiveand keep in alinement the door stiles 7 as they arrive at this point.

44 is a geared block slidably mounted upon the rack 27 and provided witha gear 45 in mesh with that. rack and with a pin t6 which is fastened tothe gear 45 by a pin 4C7. The block 14L may be secured to the rack atany desired position through the medium of a set screw 48.

Operation: The door stiles under operation are placed upon the bed 1 ofthe machine beneath the rollers 4t, 5 and 6 by which they are driventoward my machine. The stiles are placed end to end as shown and areterminally mortised by my saw 8. This saw is raised and loweredvertically by the automatic action of my device. I11 Fig. 3 my saw isshown in the operation of mortising a stile. The saw has been loweredinto operative position through contact of the end of the door stilewith the end of the spring-controlled pin 40 and pressure on that pinrotated the gear 38 in a direction. opposite to that of the stilestravel and gear 38 in mesh with gear 37 rotated it in the direction oftravel of the door stile and that gear in mesh with the rack 27 drew thesame in the same direction the door stile was traveling thus drawing thelink 23 in the same direction which draws the bar 22 clownwardly thusbringing the saw into contact with the work. After the end of the stilepasses a certain distance beyond the pin 10, leaving it in the positionshown in Fig. 3, it encounters the pin 46 of block 1 1 and forces it inthe direction of travel thus rotating the gear 45 in that direction andthis gear, being in mesh with the teeth of rack 27, forces that rack inthe opposite direction thus rotating the gear 37 in that direction andthe gear 38 in a direction opposite to the stiles until the pin 10,having overcome the pressure of its spring against the stile, again liesin receptive position for the end of the next stile in the line when theoperation just described is repeated. The saw 8 will continue to cut ormortise the stile from the time the end of one stile has left the pin41-0 until it has encountered and left the pin 16 when the saw willagain be in inoperative position. The distance between the gear blocks32 and 1 1 will determine the length of the mortise to be cut in eitherend of the stile. WVhen the link 23 is so pressed as to raise the bar 22the pins 21 and 21 of this bar are drawn out of the curved end of theslot 19 into the straight portion of that slot when these pins or boltswill raise the plates 17, 17 and through their connection with thebearings 11 and 12 will raise them and the apron 13 on its pivot thusraising the saw out of operative position.

l/vhat is claimed is:-

1.. In a machine for producing mortises, the combination, with asuitable work-carrying bed provided with feed rollers, of a poweroperated saw pivotally supported above said bed, a rack movablysupported beside said bed, connection between the said rack and the saidsaw whereby the former is caused to oscillate the latter upon its pivot,actuating means fixedly mounted upon said rack for contact with the workcarried by the said bed for moving the former a limited distance in onedirection and actuating means adjustably mounted upon the said rack forsubsequent contact with the work carried by the said bed Whereby thesaid rack is moved a limited distance in the opposite direction.

2. In a machine for producing mortises, the combination, with a suitablework-carrying bed provided with feedrollers, of a power operated sawpivotally supported above said bed, a rack movably suported beside saidbed, connection between the said rack and the said saw whereby theformer is caused to oscillate the latter upon its pivot, a gear blockfixedly mounted upon the said rack, enmeshing gears mounted in saidblock one of which engages the said rack, means carried by one of thesaid gears for engaging with the work of the said bed whereby the saidgear is actuated and means adjustably mounted upon the said rack forsubsequent engagement with the work of the said bed whereby the saidrack and connections are returned to their initial position.

3. In a machine for producing mortises, the combination, with a suitablework-carrying bed provided with feed rollers, of a power operated sawpivotally supported above said bed, a rack movably supported beside saidbed, connection between the said rack and the said saw whereby theformer is caused to oscillate the latter upon its pivot, a gear blockfixedly mounted upon the said rack, enmeshing gears mounted in saidblock one of which engages the said rack, means carried by one of thesaid gears for contact with the work of the said bed whereby the saidgear is actuated, a gear block adjustably mountedupon the said rack anda pin-provided gear mounted in said block engaging the said rack andcapable of subsequent contact with the work of the said bed. 4. In amachine for producing mortises, the combination, with a suitablework-carrying bed provided with feed rollers, of a power operated sawpivotally supported above said bed, a pair of angularly slottedoppositely-disposed connected plates, connection bet-ween the saidplates and the said saw whereby the former may oscillate the latter uponits pivot, a pivotally supported ing gears mounted in said block one ofwhich engages the said rack, means carried by one of the said gears forcontact with the work of the said bed whereby the said gear is actuated,a gear block adjustably mounted ture in the presence of two subscribingWitupon the said rack and a pin-provided nesses. gear mounted in saidblock engaging the said rack and capable of subsequent contact CARLNELSON with the Work of thesaid bed. Witnesses:

In testimony that I claim the foregoing GUST NELSON, as my own I havehereto affixed my signa- G. W. ALDEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

